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# frozen_string_literal: true
$LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', '..', '..'))
require 'puppet_x/elastic/deep_implode'
# Top-level Puppet functions
module Puppet::Parser::Functions
newfunction(
:deep_implode,
type: :rvalue,
doc: <<-ENDHEREDOC) do |args|
Recursively flattens all keys of a hash into a dot-notated
hash, deeply merging duplicate key values by natively combining
them and returns the resulting hash.
That is confusing, look at the examples for more clarity.
For example:
$hash = {'top' => {'sub' => [1]}, 'top.sub' => [2] }
$flattened_hash = deep_implode($hash)
# The resulting hash is equivalent to:
# { 'top.sub' => [1, 2] }
When the function encounters array or hash values, they are
concatenated or merged, respectively.
When duplace paths for a key are generated, the function will prefer
to retain keys with the longest root key.
@return Hash
ENDHEREDOC
raise Puppet::ParseError, "deep_implode(): wrong number of arguments (#{args.length}; must be 1)" if args.length != 1
arg = args[0]
raise Puppet::ParseError, 'deep_implode: unexpected argument type, only expects hashes' unless arg.is_a? Hash
return {} if arg.empty?
Puppet_X::Elastic.deep_implode arg
end
end
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